on 21/12/2011 18:38 Hans Petter Selasky said the following:
> On Wednesday 21 December 2011 12:29:49 Andriy Gapon wrote:
>> on 20/12/2011 14:25 Andriy Gapon said the following:
>>> I just wanted to draw your attention to the fact that obtaining any locks
>>> in the kdb context (or USB polling code
On Wednesday 21 December 2011 12:29:49 Andriy Gapon wrote:
> on 20/12/2011 14:25 Andriy Gapon said the following:
> > I just wanted to draw your attention to the fact that obtaining any locks
> > in the kdb context (or USB polling code in general, even) is not a good
> > idea. Chances of getting in
on 20/12/2011 14:25 Andriy Gapon said the following:
> I just wanted to draw your attention to the fact that obtaining any locks in
> the
> kdb context (or USB polling code in general, even) is not a good idea.
> Chances of getting into trouble on those locks are probably quite moderate or
> even
Now the juicy stuff :)
on 19/12/2011 16:30 Hans Petter Selasky said the following:
>> 3. Looking at usbd_transfer_poll I see that it touches a lot of locks,
>> including taking the bus lock. As we've discussed before, this is not safe
>> in a particular context where the polling is supposed to
on 19/12/2011 17:11 Hans Petter Selasky said the following:
> I will fix that. I see a missing wait there. Can I assume that we are allowed
> to sleep from device_shutdown() and that system timers still work?
I don't see any reason why either of these should be not true.
Oh, and I see that you've
On Monday 19 December 2011 16:06:13 Andriy Gapon wrote:
> First replying just to couple of points where there seems to be a
> misunderstanding.
>
> on 19/12/2011 16:30 Hans Petter Selasky said the following:
> >> 2. Somewhat related to the above. I think that because the USB
> >> subsystem imple
First replying just to couple of points where there seems to be a
misunderstanding.
on 19/12/2011 16:30 Hans Petter Selasky said the following:
>> 2. Somewhat related to the above. I think that because the USB subsystem
>> implements the shutdown method and detaches all its drivers, then the u
On Monday 19 December 2011 13:16:17 Andriy Gapon wrote:
> Hans Petter,
>
> I think that I see some issues in the USB code that could cause problems in
> some edge cases.
> From easiest to hardest:
>
Hi,
> 1. I think that currently there is a LOR in usb_bus_shutdown. I think
> that the followi
Hans Petter,
I think that I see some issues in the USB code that could cause problems in some
edge cases.
>From easiest to hardest:
1. I think that currently there is a LOR in usb_bus_shutdown. I think that the
following patch should fix it:
